Weather forecast for Perth effective as of 5:00 PM Tuesday August 21

Weather forecast for Perth effective as of 5:00 PM Tuesday August 21
Explanatory notes:
Scroll down below this section for forecast. 

Figure 1.Surface synoptic chart at 12 UTC(8 PM local time yesterday).Image courtesy of the Australian Bureau of Meteorology(BOM)

Figure 3.Key features identified on True Colour RGB satellite image at around 06:00 UTC(2 PM local time yesterday).Satellite image courtesy of the Japanese Meteorological Agency(JMA).

Figure 4.Mean Sea Level Pressure(MSLP) analysis with infrared greyscale satellite image at 12 UTC(8 PM 
local time yesterday).Image courtesy of the Australian Bureau of Meteorology(BOM).

Figure 4:Surface synoptic prognosis.Image courtesy of the Australian Bureau of Meteorology(BOM).

Yesterday was the warmest day of winter so far with a maximum temperature of 25.3 Degrees Celsius at Perth Metro.Plenty of middle level clouds,virga and elevated showers occurred ahead of an upper/middle level disturbance.

Thunderstorms also developed over the Southwest of the state in the evening.

Cold air mass is advecting over the region and lies over the region tomorrow.

Dy weather until Saturday night.

Tuesday August 21:

City:

Showers.

Chance of any rain:70%

Perth metropolitan area:

Partly to mostly cloudy.A high(70%) chance of showers.Winds southwesterly at 20-35 km/h,becoming south-southwesterly at 15-25 km/h at night.

Wednesday August 22:

City:

7-17 Degrees Celsius

Partly to mostly cloudy.

Chance of any rain:20%

Amount:0 mm.

Perth metropolitan area:

Partly to mostly cloudy.A slight(20%) chance of showers most likely near the coast and in the early hours.Winds south-southeasterly at 10-20 km/h becoming south-southwesterly at 15-25 km/h by late morning becoming south-southeasterly at 10-20 km/h from evening becoming light later at night.

Thursday August 23:

City:

5-18 Degrees Celsius

Partly cloudy.

Chance of any rain:0%

Amount:0 mm.

Perth metropolitan area:

Partly cloudy.Light winds.

Friday August 24:

City:

6-20 Degrees Celsius

Mostly sunny.

Chance of any rain:0%

Amount:0 mm.

Perth metropolitan area:

Mostly sunny.Winds east-northeasterly at 10-20 km/h becoming light from afternoon.

Saturday August 25:

City:

7-20 Degrees Celsius

Possible night shower.

Chance of any rain:30%

Amount:0 to 1 mm.

Perth metropolitan area:

A mostly sunny day.A slight(30%) chance of showers at night.Light winds.

Sunday August 26:

City:

8-17 Degrees Celsius

Shower or two.

Chance of any rain:50%

Amount:0 to 3 mm.

Perth metropolitan area:

Partly to mostly cloudy.A medium(50%) chance of showers.Winds southeasterly at 15-25 km/h.

Monday August 27:

City:

4-17 Degrees Celsius

Partly cloudy.

Chance of any rain:10%

Amount:0 mm.

Perth metropolitan area:

Partly cloudy.Winds south-southeasterly at 10-20 km/h.

Tuesday August 28:

City:

6-18 Degrees Celsius

Showers.

Chance of any rain:50%

Amount:0 mm.

Perth metropolitan area:

Partly to mostly cloudy.A medium(50%) chance of showers.Winds northwesterly at 20-30 km/h.

Forecast for today produced at 12:00 AM,forecast for the rest of the days produced at 4:20 PM Wednesday July 11.Weather icons courtesy of the US National Weather Service.